Invisible Ink

Learn about invisible inks, and then create your own!

Resources

King George’s Invisible Signature

Learn about an exciting artifact featuring invisible ink

Spy from Home: How to Make Invisible Ink

The International Spy Museum shares fun and engaging out-of-the-box activities while you and your kids are at home.

Invisible Ink Formulas

Check out a belt buckle that supported the Glomar Explorer cover story.